Brines having moderate to high salt content (up to 343 grams per liter [g/L]) occupy most pore spaces in rocks below a depth of a few thousand feet in Pennsylvania and are...

Computed tomography data described in the technical report series "Characterization of the Martinsburg Formation using Computed Tomography and Geophysical Logging Techniques" by...

Directional drilling and hydraulic-fracturing technologies are dramatically increasing natural-gas extraction. In aquifers overlying the Marcellus and Utica shale formations of...